Privilege Escalation in Payload CMS Due to Mismanagement of API Keys
CVE-2026-105806

8.6HIGH

Key Information:

Vendor

Payloadcms

Status
Payload
Plugin-mcp
Vendor
CVE Published:
6 October 2026

What is CVE-2026-105806?

In versions 3.61.0 to 3.88.0 of Payload CMS, a vulnerability exists allowing authenticated users to manage MCP API keys beyond their intended scope. This flaw enables privilege escalation, potentially leading to unauthorized account access. The issue was addressed in version 3.88.0. It's crucial for users of affected versions to upgrade to mitigate risks associated with this vulnerability.

Affected Version(s)

payload >= 3.61.0, < 3.88.0

plugin-mcp >= 3.61.0, < 3.88.0

References

https://github.com/payloadcms/payload/security/advisories...
x_refsource_CONFIRM
https://github.com/payloadcms/payload/commit/025581d8c5ed...
x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.88.0
x_refsource_MISC

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.